End of the Line- MOVIE

Big question: Why should we humans be concerned of overfishing?

                     * Because people are losing jobs after the cod fishery collapsed 

                     * Fish are dying and becoming endangered! 

                     * Important resourceful fish breeds are dying

1. What are the "Big Five" fish the majority of us eat?

    * Cod, Haddock, Tuna, Salmon, and Prawns

2. What is the reason for not eating sharks or other DEEPwater fish?

    * they tend to be slow growing, long-lived species which means they at extremely vulnerable to over-exploitation.

 

3. What are some "fish to eat," "fish to eat occasionally," and "fish to avoid?"

    * some fish to eat are usually from sustainable stocks or farms, or resilient to fishing pressure. 

    * some fish to eat OCCASIONALLY are lower resilience, and at risk of being sustainable. Also,

      they are probably recovering from previous exploitation.

    * some fish to avoid are Unsustainable, overfished, and poorly managed fisheries have messed up

      their cycle.

Marine Anthropods

1. What are examples of Maine anthropod's?

2.What's the difference between an anthropod's skeleton and a human? 

    *The animal lacks an internal skeleton and when they go thru their growing period, their exoskeleton sheds. Humans do not acquire this trait as our skeletons grow with our body.

3.Compare/contrast how anthropods and humans move blood in their circulatory systems.

   *

4.how do the eyes of anthropods differ from your eyes?

5.How do humans use marine anthropods?

Marine Science Words of Wisdom

Blue crabs start off life as not so attractive microscopic plankton.  In its life, a Chesapeake Bay Blue crab will molt 20-25 times, increasing its size by as much as 1/4 to 1/3 with each molt until it becomes the beautiful adult blue crabs we know and love.

Life lesson from a Blue Crab:  It may take a long time and a lot of changes to become the beautiful thing you were meant to be…stick with it…God has an amazing plan He is working to His perfection!

Nine Major Animal Phyla

The nine major phyla are:


1. Phylum Porifera - The Sponges
2. Phylum Coelenterata – The Coelenterates: jellyfish, hydras, corals

3. Phylum Platyhelminthes – The Flatworms: planaria, tapeworms

4. Phylum Nematoda – The Roundworms

5. Phylum Annelida – The Segmented Worms: earthworm, leech, sandworm

6. Phylum Arthropoda – The Arthropods: insects, spiders, crustaceans

7. Phylum Mollusca – The Mollusks: clams, snails, oysters, octopus

8. Phylum Echinodermata – The Echinoderms: sea stars, sea urchins

9. Phylum Chordata – The Chordates: fish, reptiles, amphibians, birds, mammals

• The types of habitats they can be found in are salt water, fresh water, and terrestrial.

• Some species dont have digestive systems, but those who do either have a complete or incomplete one.
• I have seen birds in the shy flying by as an example of a species in a phyla

Energy Flows Through Ecosystems

1. How does light and nutrients affect productivity in the oceans?

* Light penetrates the higher level of the ocean and causing photosynthesis to occur there.



2. What factors affect the ability of an ecosystem to support multiple tropic levels?

* The amount of energy , energy loss between tropic levels, and form, structure, and physiology of organisms at each level affect the ability of an ecosystem to support multiple tropic levels.



3. Describe the process bio accumulation, and describe the DDT example.

* The process of Bioaccumulation is where contaminants build up the food web and threaten higher level organisms. For example, DDT built up in Eagles around the 60's and eventually messed up their reproduction essentially thinning the eggs causing the mothers to crush them without intent.

Energy Flows Through Ecosystems

1. A.) Some examples of primary producers are phytoplankton, plants, algae, and certain bacteria.

B.) They are using solar energy to produce organic plant material through photosynthesis.

2. A.) The second tropic level is made up of herbivores.

B.) They get their energy source from eating plants.

3. Predators make up the third tropic level because they eat second tropic level animals and other small predators.

Animal Habitats of San Diego Bay

1. What are the Natural resources of SD Bay?
* Salt Marsh, tidal flats, bird nesting, foraging sites, eelgrass beds, and nine federal and state listed endangered or threatened species


2. What is an invasive species, and how would they have been introduced in SD Bay?
* Those that evolved elsewhere and whom caused harm to our health, environment, or economy. They came from fishery, boat hulls, or spread through dispersal.


3. What is an endangered species? What is one endangered species of SD Bay? What is being done to protect this species?
* Species close to extinction. They keep a close eye on predators and " attribute the higher productivity to the enhanced habitat quality."